99678860

素因数分解:

$2^2\times 5^1\times {\mathrm{1787}}^1\times {\mathrm{2789}}^1$

素因数の和:4585

約数の個数: 24

約数和(自身を含む): 209517840

約数和(自身を除く): 109838980

約数列:

[1, 2, 4, 5, 10, 20, 1787, 2789, 3574, 5578, 7148, 8935, 11156, 13945, 17870, 27890, 35740, 55780, 4983943, 9967886, 19935772, 24919715, 49839430, 99678860]

約数ペア:

[(1, 99678860), (2, 49839430), (4, 24919715), (5, 19935772), (10, 9967886), (20, 4983943), (1787, 55780), (2789, 35740), (3574, 27890), (5578, 17870), (7148, 13945), (8935, 11156)]